During the latter part of World War II, the Japanese Combined Fleet and the American aircraft carrier USS Langley encountered a mysterious submarine that tracked them multiple times. This submarine was incredibly fast and responsive, even rescuing sailors from both sides who had fallen overboard, reminiscent of the International Red Cross. The U.S. military dubbed it the 'Ghost Submarine.' After the war, both the U.S. and Soviet navies conducted extensive searches but found no trace, instead losing several submarines in the process. In the 1960s and 70s, the 'Ghost Submarine' reappeared in the Pacific and Atlantic, causing headaches for both navies. In 1990, NATO forces encountered the 'Ghost Submarine' during an exercise, resulting in communication failures. In 1993, French diving experts discovered a rotating silver-gray structure, possibly another type of 'Ghost Submarine.' There are speculations that the base of the 'Ghost Submarine' is located near the Bermuda Triangle. In 1985, an American underwater explorer found a massive underwater pyramid near the Bahamas, believed to be the base of the 'Ghost Submarine.' Researchers suggest that the operators of the 'Ghost Submarine' may come from outer space or be related to the mythical 'sea monsters' on Earth, both of which possess civilizations far more advanced than humanity.